The first planet beyond our solar system was identified just 30 years ago. Since then, thousands have been found and characterized. As we look for more, exoplanet experts are also probing for signs of ...

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This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...

An artist’s impression of the rocky, habitable-zone exoplanet Kepler-168b. Credit: NASA Ames/NASA/JPL–Caltech/Tim Pyle (Caltech) New research suggests that technological civilizations in the Milky Way ...

It’s a sweltering Tuesday in Washington, D.C., the kind of day that stretches the definition of Earth as a “habitable” planet. But on an eighth-floor terrace near the U.S. Capitol building, dozens of ...

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Imagine if the nearest intelligent aliens were not across the street, not across the solar system, but on the far side of the Milky Way, some 33,000 light-years away from Earth. That’s the scenario ...

This artist's concept of a lake at the north pole of Saturn's moon Titan illustrates raised rims and rampart-like features as seen by NASA's Cassini spacecraft. Credit: NASA/JPL-Caltech. Saturn’s ...

Scientists reveal simple way to test for life on Mars using kit already on the Curiosity rover A PhD student and his supervisor have developed a simple way for testing for active life on Mars and ...

Michael L. Wong is a NASA Sagan Postdoctoral Fellow who works at Carnegie Science’s Earth & Planets Laboratory and studies astrobiology and planetary science. As an astrobiologist, I am often teased ...

In April, scientists announced that they had used NASA’s James Webb Space Telescope to find a potential signature of alien life in the glow of a distant planet. Other scientists were quick to ...